Time Calculator
Age Calculator
Find exact age in years, months, and days, then expand it into total weeks, days, hours, and your next birthday countdown.
About Age Calculator
This page is built for the most common age question: how old someone is today or on a specific date. It returns both the calendar age and the total time passed.
Why use this age calculator
You can compare the date of birth against today or set a custom comparison date for forms, eligibility checks, planning, and historical age lookups.
Core features
Alongside years, months, and days, the result expands into total weeks, total days, total hours, weekday of birth, and the next birthday countdown.
How to use (step-by-step)
Enter the birth date, optionally set an age-at date, and click Calculate Age. The output is designed to be easy to scan for both exact age and quick total-time metrics.
Frequently Asked Questions
Can I calculate age on a past or future date?
Yes. Enter any comparison date on or after the date of birth to see the exact age on that date.
Does the result include total days lived?
Yes. The result includes total days, weeks, months, hours, minutes, and seconds lived for quick reference.
What happens if I leave the comparison date blank?
The calculator uses today as the reference date so you can quickly see current age.
Does this handle leap years?
Yes. The date math accounts for real calendar month lengths and leap years when calculating exact age.
Can I see the next birthday too?
Yes. The result includes the next birthday date and the number of days remaining.